Comparative performance of different maturity groups of soybean (Glycine max L. Merrill) genotypes under Punjab conditions

Soybean (Glycine max L. Merrill) is an important leguminous pulse and vegetable oil seed crops growing in tropical and sub-tropical regions of India. It is a thermo-sensitive crop and its response to yield is governed by genotype which differing maturity. Fifteen genotypes differing in maturity dates-early, medium and late were selected and sown on first fortnight of June. The genotypes with late maturing date produced higher yield as compared to the early and medium maturing genotypes. The results revealed that the genotypes early (EC 457161), medium (SL 983) and late (SL 958 ) produced higher numbers of pods per plant, plant height, more 100-seed weight, harvest index and maximum seed yield (2053.67, 2441.91 and 2370.86 kg/ha) than other because of their better genotypic records. Finally, the genotype SL-958 at late maturing date seemed to be more effective in getting higher grain yields.